Windows doesn't detect my new graphics card

i have about a 5 yr old compaq running xp.i had bestbuy to put in a radeon 9550 avg graphics card and i had to restore my com now windows wont detect the card so when i try to install the soft ware it says it cant find any hardware to install the software.i could use any help plz and ty.
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the factory card is good and i use to have this radeon 9559 avg card in but i had to restore.i know i have to disable it in the bios which i dont know what to look for in bios cus id dont just say video card.

there is no yellow mark and it only shows my factory card.ive just been messing around trying to get windows to detect the radeon card.it was doin it earlier today but i wasnt installing it at the time and then it stop the detect wizard.any suggestions?

Try this:
Remove the card
Plug your Monitor into your onboard Video socket
Boot up fully
Shutdown (strange I know!)
Fit the new card again (securely <- they have a to be pushed in flush)
Put the Monitor back to the new AGP card
Turn on
At this point you might want to check CMOS setup for any "Enable" AGP addon support.
Then Save and exit, and continue boot up

Hopefully the card is then detected
As long as that card is compatible with your Motherboard

the only thing i meant thats in device manager is the old factory card.and since the guy from bestbuy put the card in the first time he said something about he disabled the old one in the bios but my computer is about 5 yrs old and the bios dosent say enable avg support.the only thing close to that i seen wasvga palette snooping.and to disable the old pci card i dont know what to look for but i guess it dont matter being windos stop detecting the new card grrr.

i meant in the device manger the only card showing is the factory pci card.and my bios doesnt have enableagp so i dont know what to look for.i have like pci bus mastering enabled and coouple other things but guess it dont matter being windows stoped detecting the old card grr.

Yes, because you are so quick to reply (which is quite good actually) I didn't decide to edit my above post and answer that question too. So I'll do it now!

It is possible that your BIOS (or CMOS setup) does not show AGP enabled option (basically some old Bios setups didn't have it)
If the Bios doesn't have any "enable" option, then it must autoEnable on the card insertion

But Device Manager would still show in the area: "Display Adaptors" your AGP card
By the way, if there is anything stated under "Display Adaptors" just remove it (right click and remove) then restart. (But I believe you have already done this)

ya has to be the old card is enabled and i remember the guy at bestbuy telling me he had to disable it in bios.it wont even let me install the cards cd installation becaus it says it cant find any hardware.

BIOS (mentioned all the way along in this thread) is what holds the software of what turns your computer on (and is Read-Only)
CMOS is the adjustable part (like Enable or Disable settings that you can make)

the factory card is good and i use to have this radeon 9559 avg card in but i had to restore.i know i have to disable it in the bios which i dont know what to look for in bios cus id dont just say video card.

Click to expand...

You have been to Bios (or CMOS rather)
And we ( well I ) have spoken about CMOS throughout this thread (many times)

Are you saying you haven't been to CMOS yet ??? <-- Note excessive use of ? (normally not allowed, unless support frustrated!)

There are already too many replies to this thread, for me to go back to the start and say check CMOS

When you first turn on your computer, you should notice a key to press like DEL or F2 (or something) to get into CMOS setup

Once you see that key (displayed on the screen somewhere)
Press it, within 3seconds, to get into the CMOS setup screen

Now, some old Bios revisions (or computers rather) don't display this key prompt
No doubt yours being one of them!
In that case you would need to work out (possibly through downloading the manual) what the key button press is (ie even if it doesn't show when you first turn on the computer, it still can be pressed)

ya its f10 to get me in bios settings but theres only soo many things there like onbourd devices um pci something im just not sure what to change but like i said i got to find out why windows has stoped detecting the hardware first.